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  <title>getColumnIsPrimaryKey (SQLRCursor)</title>
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  <pre>/**
 *  call-seq:
 *  getColumnIsPrimaryKey(col)
 *
 *  Returns 1 if the specified column is a primary key and 0 otherwise.
 *  &quot;col&quot; may be specified as the column name or number. */
static VALUE sqlrcur_getColumnIsPrimaryKey(VALUE self, VALUE col) {
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